We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleDoing clinical trials large enough to achieve adequate reductions in uncertainties about treatment effects.AuthorsCampbell MJPublicationJournal of the Royal Society of Medicine, 2013, Vol 106, Issue 2, p68ISSN1758-1095Publication typearticleDOI10.1177/0141076813477570